package Io;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class Test {
    public static void main(String[] args) throws IOException {
        FileOutputStream fos = new FileOutputStream("fos.txt");
        for (char c = 'a'; c <= 'z'; c++) {
            fos.write(c);
        }
        System.out.println("写出完毕");
        fos.close();
    }
}
